Xen Bridge for multiple NICs?

I seem to be having some trouble getting accurate information of configuring multiple bridges in Xen. Some of the threads I have read imply that unbrakable linix does this be default but that is not the case. I have two NICs in the server setup to two seperate segments:
eth0 = 192.168.42.X
eth1 = 192.168.10.X
both are configured with static IPs and from domain0 I have good conectivity.
For some reason I only have one bridge which is br1 attached to eth1 on the 10 segment. I found a how to document off this site for Red Hat 5.1 in order to add another bridge manualy but the proceedure failed. At this point all changes are backed off and every thing is working. I admit I am rather new with linux and still trying to come up to speed.
The goal is to have two bridged NIC configs on several of the hosted Windows servers:
eth0 = 192.168.42.X
eth1 = 192.168.10.X
Any help would be greatly appreciated

I found this solution off site. A very simple and elegant solution... Work like a champ now.... Thanks for the tips.
- In /etc/sysconfig/network-scripts of dom0 , Configure eth0, eth1 and eth3 with appropriate network details.
- Edit /etc/xen/xend-config.sxp, comment out Line 91 by putting a # in the beginning of the line and add the below line after that.
(network-script network-custom)
- Crate /etc/xen/scripts/network-custom with the below contents in it and give it 755 permission.
#!/bin/bash
/etc/xen/scripts/network-bridge $1 netdev=eth0 bridge=xenbr0 vifnum=0
/etc/xen/scripts/network-bridge $1 netdev=eth1 bridge=xenbr1 vifnum=1
/etc/xen/scripts/network-bridge $1 netdev=eth2 bridge=xenbr2 vifnum=2
- Reboot your system.
- Now you should have xenbr0, xenbr1 and xenbr2 configured properly on your host system. Run "brctl show" to see details.
Now if you want to start a guest with three virtual interfaces, Edit the guest configuration file in /etc/xen/≤guest name> and change vif= parameter as below.
vif = [ "mac=00:16:3e:7b:0e:a4,bridge=xenbr0,script=vif-bridge","mac=00:16:3e:7b:0e:a5,bridge=xenbr1,script=vif-bridge" ,"mac=00:16:3e:7b:0e:a6,bridge=xenbr2,script=vif-bridge"]
This would create three virtual ethernet interfaces - eth0, eth1 and eth2 - in the guest where eth0 would be bridged to xenbr0, eth1 to xenbr1 and eth2 to xenbr2. Then configure these virtual interfaces in the guest as you usually do with a physical system. If eth0, eth1 and eth2 in dom0 are connected to separate subnets and if you configure these three virtual ethernets in the guest to obtain their ip addresses from dhcp, then they should have obtained an ip address from the respective dhcp servers when you restart network service in the guest. Please make sure that the mac address you assign is unique.
The above vif = entry is for a para-virtualized guest. If it's a fully virtualized guest, it should be as below.
vif = [ 'type=ioemu, mac=00:16:3e:04:98:04, bridge=xenbr0','type=ioemu, mac=00:16:3e:04:98:05, bridge=xenbr1','type=ioemu, mac=00:16:3e:04:98:06, bridge=xenbr2' ]

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